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@@ -0,0 +1,28 @@
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+v4l2object: support for Apple's full-range bt709 colorimetry variant 1:3:5:1
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+
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+Signed-off-by: Leo Lu <leo.lu@starfivetech.com>
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+
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+--- a/sys/v4l2/gstv4l2object.c 2023-09-04 14:28:13.336536474 +0800
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++++ b/sys/v4l2/gstv4l2object.c 2023-09-04 14:26:46.964215199 +0800
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+@@ -2394,6 +2394,21 @@ gst_v4l2_object_add_colorspace (GstV4l2O
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+ if (colorspace == req_cspace) {
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+ if (gst_v4l2_object_get_colorspace (v4l2object, &fmt, &cinfo))
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+ gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
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++
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++ if (colorspace == V4L2_COLORSPACE_REC709) {
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++ /* support for full-range variants of colorspaces V4L2_COLORSPACE_REC709
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++ * (such as Apple's full-range bt709 variant 1:3:5:1) */
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++ struct v4l2_format alt_fmt;
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++ memcpy (&alt_fmt, &fmt, sizeof (alt_fmt));
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++
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++ if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
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++ alt_fmt.fmt.pix_mp.quantization = V4L2_QUANTIZATION_FULL_RANGE;
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++ else
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++ alt_fmt.fmt.pix.quantization = V4L2_QUANTIZATION_FULL_RANGE;
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++
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++ if (gst_v4l2_object_get_colorspace (v4l2object, &alt_fmt, &cinfo))
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++ gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
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++ }
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+ }
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+ }
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+ }
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